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Finding the Fourth Proportional to 55,510.80, 83,237.40 and 20,432.40

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Solution

The fourth proportional to 55,510.80, 83,237.40 and 20,432.40 is: 30,638.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,510.80 : 83,237.40 = 20,432.40 : x
  2. Step 2: Convert to fraction form
    55,510.80/83,237.40 = 20,432.40/x
  3. Step 3: Cross multiply
    55,510.80x = 83,237.40 × 20,432.40
  4. Step 4: Simplify right side
    55,510.80x = 1,700,739,851.76
  5. Step 5: Solve for x
    x = 1,700,739,851.76/55,510.80
  6. Step 6: Final answer
    x = 30,638.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.