Home / 56,397.90-77,825.47-30,903.96

Finding the Fourth Proportional to 56,397.90, 77,825.47 and 30,903.96

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Solution

The fourth proportional to 56,397.90, 77,825.47 and 30,903.96 is: 42,645.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,397.90 : 77,825.47 = 30,903.96 : x
  2. Step 2: Convert to fraction form
    56,397.90/77,825.47 = 30,903.96/x
  3. Step 3: Cross multiply
    56,397.90x = 77,825.47 × 30,903.96
  4. Step 4: Simplify right side
    56,397.90x = 2,405,115,211.86
  5. Step 5: Solve for x
    x = 2,405,115,211.86/56,397.90
  6. Step 6: Final answer
    x = 42,645.47

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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.