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Finding the Fourth Proportional to 107,030.64, 147,700.78 and 61,708.71

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Solution

The fourth proportional to 107,030.64, 147,700.78 and 61,708.71 is: 85,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,030.64 : 147,700.78 = 61,708.71 : x
  2. Step 2: Convert to fraction form
    107,030.64/147,700.78 = 61,708.71/x
  3. Step 3: Cross multiply
    107,030.64x = 147,700.78 × 61,708.71
  4. Step 4: Simplify right side
    107,030.64x = 9,114,424,599.79
  5. Step 5: Solve for x
    x = 9,114,424,599.79/107,030.64
  6. Step 6: Final answer
    x = 85,157.15

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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.