Home / 105,276.28-145,278.87-57,529.92

Finding the Fourth Proportional to 105,276.28, 145,278.87 and 57,529.92

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Solution

The fourth proportional to 105,276.28, 145,278.87 and 57,529.92 is: 79,389.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,276.28 : 145,278.87 = 57,529.92 : x
  2. Step 2: Convert to fraction form
    105,276.28/145,278.87 = 57,529.92/x
  3. Step 3: Cross multiply
    105,276.28x = 145,278.87 × 57,529.92
  4. Step 4: Simplify right side
    105,276.28x = 8,357,881,768.79
  5. Step 5: Solve for x
    x = 8,357,881,768.79/105,276.28
  6. Step 6: Final answer
    x = 79,389.98

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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.