Home / 78,155,905.48-117,085,882.98-52,169,851.12

Finding the Fourth Proportional to 78,155,905.48, 117,085,882.98 and 52,169,851.12

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Solution

The fourth proportional to 78,155,905.48, 117,085,882.98 and 52,169,851.12 is: 78,156,001.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,155,905.48 : 117,085,882.98 = 52,169,851.12 : x
  2. Step 2: Convert to fraction form
    78,155,905.48/117,085,882.98 = 52,169,851.12/x
  3. Step 3: Cross multiply
    78,155,905.48x = 117,085,882.98 × 52,169,851.12
  4. Step 4: Simplify right side
    78,155,905.48x = 6,108,353,083,320,342
  5. Step 5: Solve for x
    x = 6,108,353,083,320,342/78,155,905.48
  6. Step 6: Final answer
    x = 78,156,001.72

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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.