Home / 85,816,726.40-128,725,089.60-31,952,892.80

Finding the Fourth Proportional to 85,816,726.40, 128,725,089.60 and 31,952,892.80

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Solution

The fourth proportional to 85,816,726.40, 128,725,089.60 and 31,952,892.80 is: 47,929,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,816,726.40 : 128,725,089.60 = 31,952,892.80 : x
  2. Step 2: Convert to fraction form
    85,816,726.40/128,725,089.60 = 31,952,892.80/x
  3. Step 3: Cross multiply
    85,816,726.40x = 128,725,089.60 × 31,952,892.80
  4. Step 4: Simplify right side
    85,816,726.40x = 4,113,138,988,659,195
  5. Step 5: Solve for x
    x = 4,113,138,988,659,195/85,816,726.40
  6. Step 6: Final answer
    x = 47,929,339.20

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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.