Home / 28,113,043.40-42,169,565.10-7,918,285.40

Finding the Fourth Proportional to 28,113,043.40, 42,169,565.10 and 7,918,285.40

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Solution

The fourth proportional to 28,113,043.40, 42,169,565.10 and 7,918,285.40 is: 11,877,428.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113,043.40 : 42,169,565.10 = 7,918,285.40 : x
  2. Step 2: Convert to fraction form
    28,113,043.40/42,169,565.10 = 7,918,285.40/x
  3. Step 3: Cross multiply
    28,113,043.40x = 42,169,565.10 × 7,918,285.40
  4. Step 4: Simplify right side
    28,113,043.40x = 333,910,651,655,679.56
  5. Step 5: Solve for x
    x = 333,910,651,655,679.56/28,113,043.40
  6. Step 6: Final answer
    x = 11,877,428.10

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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.