Home / 56,877.32-78,492.84-31,731.68

Finding the Fourth Proportional to 56,877.32, 78,492.84 and 31,731.68

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Solution

The fourth proportional to 56,877.32, 78,492.84 and 31,731.68 is: 43,790.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,877.32 : 78,492.84 = 31,731.68 : x
  2. Step 2: Convert to fraction form
    56,877.32/78,492.84 = 31,731.68/x
  3. Step 3: Cross multiply
    56,877.32x = 78,492.84 × 31,731.68
  4. Step 4: Simplify right side
    56,877.32x = 2,490,709,681.17
  5. Step 5: Solve for x
    x = 2,490,709,681.17/56,877.32
  6. Step 6: Final answer
    x = 43,790.91

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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.