Home / 56,420.16-77,859.84-31,269.12

Finding the Fourth Proportional to 56,420.16, 77,859.84 and 31,269.12

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Solution

The fourth proportional to 56,420.16, 77,859.84 and 31,269.12 is: 43,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,420.16 : 77,859.84 = 31,269.12 : x
  2. Step 2: Convert to fraction form
    56,420.16/77,859.84 = 31,269.12/x
  3. Step 3: Cross multiply
    56,420.16x = 77,859.84 × 31,269.12
  4. Step 4: Simplify right side
    56,420.16x = 2,434,608,680.14
  5. Step 5: Solve for x
    x = 2,434,608,680.14/56,420.16
  6. Step 6: Final answer
    x = 43,151.40

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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.