Home / 56,070.07-77,377.28-30,920.47

Finding the Fourth Proportional to 56,070.07, 77,377.28 and 30,920.47

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Solution

The fourth proportional to 56,070.07, 77,377.28 and 30,920.47 is: 42,670.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,070.07 : 77,377.28 = 30,920.47 : x
  2. Step 2: Convert to fraction form
    56,070.07/77,377.28 = 30,920.47/x
  3. Step 3: Cross multiply
    56,070.07x = 77,377.28 × 30,920.47
  4. Step 4: Simplify right side
    56,070.07x = 2,392,541,864.92
  5. Step 5: Solve for x
    x = 2,392,541,864.92/56,070.07
  6. Step 6: Final answer
    x = 42,670.57

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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.