Home / 78,172,085.20-117,258,127.80-58,772,520.40

Finding the Fourth Proportional to 78,172,085.20, 117,258,127.80 and 58,772,520.40

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Solution

The fourth proportional to 78,172,085.20, 117,258,127.80 and 58,772,520.40 is: 88,158,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,172,085.20 : 117,258,127.80 = 58,772,520.40 : x
  2. Step 2: Convert to fraction form
    78,172,085.20/117,258,127.80 = 58,772,520.40/x
  3. Step 3: Cross multiply
    78,172,085.20x = 117,258,127.80 × 58,772,520.40
  4. Step 4: Simplify right side
    78,172,085.20x = 6,891,555,708,191,307
  5. Step 5: Solve for x
    x = 6,891,555,708,191,307/78,172,085.20
  6. Step 6: Final answer
    x = 88,158,780.60

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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.