Home / 42,779.04-64,115.10-20,586.46

Finding the Fourth Proportional to 42,779.04, 64,115.10 and 20,586.46

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Solution

The fourth proportional to 42,779.04, 64,115.10 and 20,586.46 is: 30,853.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.04 : 64,115.10 = 20,586.46 : x
  2. Step 2: Convert to fraction form
    42,779.04/64,115.10 = 20,586.46/x
  3. Step 3: Cross multiply
    42,779.04x = 64,115.10 × 20,586.46
  4. Step 4: Simplify right side
    42,779.04x = 1,319,902,941.55
  5. Step 5: Solve for x
    x = 1,319,902,941.55/42,779.04
  6. Step 6: Final answer
    x = 30,853.96

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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.