Home / 31,851,915-47,778,047.46-7,917,387

Finding the Fourth Proportional to 31,851,915, 47,778,047.46 and 7,917,387

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Solution

The fourth proportional to 31,851,915, 47,778,047.46 and 7,917,387 is: 11,876,123.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,851,915 : 47,778,047.46 = 7,917,387 : x
  2. Step 2: Convert to fraction form
    31,851,915/47,778,047.46 = 7,917,387/x
  3. Step 3: Cross multiply
    31,851,915x = 47,778,047.46 × 7,917,387
  4. Step 4: Simplify right side
    31,851,915x = 378,277,291,845,187
  5. Step 5: Solve for x
    x = 378,277,291,845,187/31,851,915
  6. Step 6: Final answer
    x = 11,876,123.99

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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.