Home / 56,638.14-78,160.95-31,145.01

Finding the Fourth Proportional to 56,638.14, 78,160.95 and 31,145.01

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Solution

The fourth proportional to 56,638.14, 78,160.95 and 31,145.01 is: 42,980.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,638.14 : 78,160.95 = 31,145.01 : x
  2. Step 2: Convert to fraction form
    56,638.14/78,160.95 = 31,145.01/x
  3. Step 3: Cross multiply
    56,638.14x = 78,160.95 × 31,145.01
  4. Step 4: Simplify right side
    56,638.14x = 2,434,323,276.26
  5. Step 5: Solve for x
    x = 2,434,323,276.26/56,638.14
  6. Step 6: Final answer
    x = 42,980.29

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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.