Home / 56,420.24-77,859.48-30,926.70

Finding the Fourth Proportional to 56,420.24, 77,859.48 and 30,926.70

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Solution

The fourth proportional to 56,420.24, 77,859.48 and 30,926.70 is: 42,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,420.24 : 77,859.48 = 30,926.70 : x
  2. Step 2: Convert to fraction form
    56,420.24/77,859.48 = 30,926.70/x
  3. Step 3: Cross multiply
    56,420.24x = 77,859.48 × 30,926.70
  4. Step 4: Simplify right side
    56,420.24x = 2,407,936,780.12
  5. Step 5: Solve for x
    x = 2,407,936,780.12/56,420.24
  6. Step 6: Final answer
    x = 42,678.60

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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.