Home / 81,421.15-112,361.01-45,124.92

Finding the Fourth Proportional to 81,421.15, 112,361.01 and 45,124.92

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Solution

The fourth proportional to 81,421.15, 112,361.01 and 45,124.92 is: 62,272.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,421.15 : 112,361.01 = 45,124.92 : x
  2. Step 2: Convert to fraction form
    81,421.15/112,361.01 = 45,124.92/x
  3. Step 3: Cross multiply
    81,421.15x = 112,361.01 × 45,124.92
  4. Step 4: Simplify right side
    81,421.15x = 5,070,281,587.37
  5. Step 5: Solve for x
    x = 5,070,281,587.37/81,421.15
  6. Step 6: Final answer
    x = 62,272.29

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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.