Home / 57,038.76-78,714.01-31,543.81

Finding the Fourth Proportional to 57,038.76, 78,714.01 and 31,543.81

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Solution

The fourth proportional to 57,038.76, 78,714.01 and 31,543.81 is: 43,530.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,038.76 : 78,714.01 = 31,543.81 : x
  2. Step 2: Convert to fraction form
    57,038.76/78,714.01 = 31,543.81/x
  3. Step 3: Cross multiply
    57,038.76x = 78,714.01 × 31,543.81
  4. Step 4: Simplify right side
    57,038.76x = 2,482,939,775.78
  5. Step 5: Solve for x
    x = 2,482,939,775.78/57,038.76
  6. Step 6: Final answer
    x = 43,530.75

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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.