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Finding the Fourth Proportional to 77,897.87, 107,587.73 and 52,359.89

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Solution

The fourth proportional to 77,897.87, 107,587.73 and 52,359.89 is: 72,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,897.87 : 107,587.73 = 52,359.89 : x
  2. Step 2: Convert to fraction form
    77,897.87/107,587.73 = 52,359.89/x
  3. Step 3: Cross multiply
    77,897.87x = 107,587.73 × 52,359.89
  4. Step 4: Simplify right side
    77,897.87x = 5,633,281,715.32
  5. Step 5: Solve for x
    x = 5,633,281,715.32/77,897.87
  6. Step 6: Final answer
    x = 72,316.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.