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Finding the Fourth Proportional to 101,681.57, 140,321.56 and 56,360.52

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Solution

The fourth proportional to 101,681.57, 140,321.56 and 56,360.52 is: 77,778.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,681.57 : 140,321.56 = 56,360.52 : x
  2. Step 2: Convert to fraction form
    101,681.57/140,321.56 = 56,360.52/x
  3. Step 3: Cross multiply
    101,681.57x = 140,321.56 × 56,360.52
  4. Step 4: Simplify right side
    101,681.57x = 7,908,596,088.81
  5. Step 5: Solve for x
    x = 7,908,596,088.81/101,681.57
  6. Step 6: Final answer
    x = 77,778.07

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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.