Home / 78,551,730.41-117,645,987.08-75,827,680.16

Finding the Fourth Proportional to 78,551,730.41, 117,645,987.08 and 75,827,680.16

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Solution

The fourth proportional to 78,551,730.41, 117,645,987.08 and 75,827,680.16 is: 113,566,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,551,730.41 : 117,645,987.08 = 75,827,680.16 : x
  2. Step 2: Convert to fraction form
    78,551,730.41/117,645,987.08 = 75,827,680.16/x
  3. Step 3: Cross multiply
    78,551,730.41x = 117,645,987.08 × 75,827,680.16
  4. Step 4: Simplify right side
    78,551,730.41x = 8,920,822,279,442,364
  5. Step 5: Solve for x
    x = 8,920,822,279,442,364/78,551,730.41
  6. Step 6: Final answer
    x = 113,566,209.60

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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.