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Finding the Fourth Proportional to 101,803.70, 140,490.24 and 56,482.76

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Solution

The fourth proportional to 101,803.70, 140,490.24 and 56,482.76 is: 77,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,803.70 : 140,490.24 = 56,482.76 : x
  2. Step 2: Convert to fraction form
    101,803.70/140,490.24 = 56,482.76/x
  3. Step 3: Cross multiply
    101,803.70x = 140,490.24 × 56,482.76
  4. Step 4: Simplify right side
    101,803.70x = 7,935,276,508.26
  5. Step 5: Solve for x
    x = 7,935,276,508.26/101,803.70
  6. Step 6: Final answer
    x = 77,946.84

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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.