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Finding the Fourth Proportional to 77,428.90, 116,064.90 and 52,471.45

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Solution

The fourth proportional to 77,428.90, 116,064.90 and 52,471.45 is: 78,654.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,428.90 : 116,064.90 = 52,471.45 : x
  2. Step 2: Convert to fraction form
    77,428.90/116,064.90 = 52,471.45/x
  3. Step 3: Cross multiply
    77,428.90x = 116,064.90 × 52,471.45
  4. Step 4: Simplify right side
    77,428.90x = 6,090,093,597.11
  5. Step 5: Solve for x
    x = 6,090,093,597.11/77,428.90
  6. Step 6: Final answer
    x = 78,654.01

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1.5x scale

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.