Home / 77,811.52-107,230.08-56,557.12

Finding the Fourth Proportional to 77,811.52, 107,230.08 and 56,557.12

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Solution

The fourth proportional to 77,811.52, 107,230.08 and 56,557.12 is: 77,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,811.52 : 107,230.08 = 56,557.12 : x
  2. Step 2: Convert to fraction form
    77,811.52/107,230.08 = 56,557.12/x
  3. Step 3: Cross multiply
    77,811.52x = 107,230.08 × 56,557.12
  4. Step 4: Simplify right side
    77,811.52x = 6,064,624,502.17
  5. Step 5: Solve for x
    x = 6,064,624,502.17/77,811.52
  6. Step 6: Final answer
    x = 77,939.93

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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.