Home / 81,421.93-112,362.19-45,612.20

Finding the Fourth Proportional to 81,421.93, 112,362.19 and 45,612.20

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Solution

The fourth proportional to 81,421.93, 112,362.19 and 45,612.20 is: 62,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,421.93 : 112,362.19 = 45,612.20 : x
  2. Step 2: Convert to fraction form
    81,421.93/112,362.19 = 45,612.20/x
  3. Step 3: Cross multiply
    81,421.93x = 112,362.19 × 45,612.20
  4. Step 4: Simplify right side
    81,421.93x = 5,125,086,980.22
  5. Step 5: Solve for x
    x = 5,125,086,980.22/81,421.93
  6. Step 6: Final answer
    x = 62,944.80

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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.