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Finding the Fourth Proportional to 77,880.93, 107,475.60 and 42,070.92

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Solution

The fourth proportional to 77,880.93, 107,475.60 and 42,070.92 is: 58,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,880.93 : 107,475.60 = 42,070.92 : x
  2. Step 2: Convert to fraction form
    77,880.93/107,475.60 = 42,070.92/x
  3. Step 3: Cross multiply
    77,880.93x = 107,475.60 × 42,070.92
  4. Step 4: Simplify right side
    77,880.93x = 4,521,597,369.55
  5. Step 5: Solve for x
    x = 4,521,597,369.55/77,880.93
  6. Step 6: Final answer
    x = 58,057.82

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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.