Home / 81,417.32-121,966.98-56,112.32

Finding the Fourth Proportional to 81,417.32, 121,966.98 and 56,112.32

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Solution

The fourth proportional to 81,417.32, 121,966.98 and 56,112.32 is: 84,058.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,417.32 : 121,966.98 = 56,112.32 : x
  2. Step 2: Convert to fraction form
    81,417.32/121,966.98 = 56,112.32/x
  3. Step 3: Cross multiply
    81,417.32x = 121,966.98 × 56,112.32
  4. Step 4: Simplify right side
    81,417.32x = 6,843,850,211.19
  5. Step 5: Solve for x
    x = 6,843,850,211.19/81,417.32
  6. Step 6: Final answer
    x = 84,058.90

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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.