Home / 85,744,005.40-128,616,008.10-51,731,781.40

Finding the Fourth Proportional to 85,744,005.40, 128,616,008.10 and 51,731,781.40

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Solution

The fourth proportional to 85,744,005.40, 128,616,008.10 and 51,731,781.40 is: 77,597,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,744,005.40 : 128,616,008.10 = 51,731,781.40 : x
  2. Step 2: Convert to fraction form
    85,744,005.40/128,616,008.10 = 51,731,781.40/x
  3. Step 3: Cross multiply
    85,744,005.40x = 128,616,008.10 × 51,731,781.40
  4. Step 4: Simplify right side
    85,744,005.40x = 6,653,535,215,569,829
  5. Step 5: Solve for x
    x = 6,653,535,215,569,829/85,744,005.40
  6. Step 6: Final answer
    x = 77,597,672.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.