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Finding the Fourth Proportional to 101,479.57, 140,038.36 and 56,159.46

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Solution

The fourth proportional to 101,479.57, 140,038.36 and 56,159.46 is: 77,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,479.57 : 140,038.36 = 56,159.46 : x
  2. Step 2: Convert to fraction form
    101,479.57/140,038.36 = 56,159.46/x
  3. Step 3: Cross multiply
    101,479.57x = 140,038.36 × 56,159.46
  4. Step 4: Simplify right side
    101,479.57x = 7,864,478,536.49
  5. Step 5: Solve for x
    x = 7,864,478,536.49/101,479.57
  6. Step 6: Final answer
    x = 77,498.15

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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.