Home / 60,621.15-90,931.90-21,178.26

Finding the Fourth Proportional to 60,621.15, 90,931.90 and 21,178.26

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Solution

The fourth proportional to 60,621.15, 90,931.90 and 21,178.26 is: 31,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,621.15 : 90,931.90 = 21,178.26 : x
  2. Step 2: Convert to fraction form
    60,621.15/90,931.90 = 21,178.26/x
  3. Step 3: Cross multiply
    60,621.15x = 90,931.90 × 21,178.26
  4. Step 4: Simplify right side
    60,621.15x = 1,925,779,594.88
  5. Step 5: Solve for x
    x = 1,925,779,594.88/60,621.15
  6. Step 6: Final answer
    x = 31,767.45

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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.