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Finding the Fourth Proportional to 77,710.66, 107,240.53 and 43,719.16

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Solution

The fourth proportional to 77,710.66, 107,240.53 and 43,719.16 is: 60,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,710.66 : 107,240.53 = 43,719.16 : x
  2. Step 2: Convert to fraction form
    77,710.66/107,240.53 = 43,719.16/x
  3. Step 3: Cross multiply
    77,710.66x = 107,240.53 × 43,719.16
  4. Step 4: Simplify right side
    77,710.66x = 4,688,465,889.55
  5. Step 5: Solve for x
    x = 4,688,465,889.55/77,710.66
  6. Step 6: Final answer
    x = 60,332.34

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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.