Home / 77,639.40-107,146.17-43,658.58

Finding the Fourth Proportional to 77,639.40, 107,146.17 and 43,658.58

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Solution

The fourth proportional to 77,639.40, 107,146.17 and 43,658.58 is: 60,250.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,639.40 : 107,146.17 = 43,658.58 : x
  2. Step 2: Convert to fraction form
    77,639.40/107,146.17 = 43,658.58/x
  3. Step 3: Cross multiply
    77,639.40x = 107,146.17 × 43,658.58
  4. Step 4: Simplify right side
    77,639.40x = 4,677,849,416.35
  5. Step 5: Solve for x
    x = 4,677,849,416.35/77,639.40
  6. Step 6: Final answer
    x = 60,250.98

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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.