Home / 78,828,411-118,242,566.28-57,399,331.80

Finding the Fourth Proportional to 78,828,411, 118,242,566.28 and 57,399,331.80

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Solution

The fourth proportional to 78,828,411, 118,242,566.28 and 57,399,331.80 is: 86,098,961.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,828,411 : 118,242,566.28 = 57,399,331.80 : x
  2. Step 2: Convert to fraction form
    78,828,411/118,242,566.28 = 57,399,331.80/x
  3. Step 3: Cross multiply
    78,828,411x = 118,242,566.28 × 57,399,331.80
  4. Step 4: Simplify right side
    78,828,411x = 6,787,044,294,789,211
  5. Step 5: Solve for x
    x = 6,787,044,294,789,211/78,828,411
  6. Step 6: Final answer
    x = 86,098,961.13

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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.