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Finding the Fourth Proportional to 73,478.24, 101,220 and 53,275.76

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Solution

The fourth proportional to 73,478.24, 101,220 and 53,275.76 is: 73,390.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,478.24 : 101,220 = 53,275.76 : x
  2. Step 2: Convert to fraction form
    73,478.24/101,220 = 53,275.76/x
  3. Step 3: Cross multiply
    73,478.24x = 101,220 × 53,275.76
  4. Step 4: Simplify right side
    73,478.24x = 5,392,572,427.20
  5. Step 5: Solve for x
    x = 5,392,572,427.20/73,478.24
  6. Step 6: Final answer
    x = 73,390.06

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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.