Home / 56,434.17-77,878.65-30,942.12

Finding the Fourth Proportional to 56,434.17, 77,878.65 and 30,942.12

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Solution

The fourth proportional to 56,434.17, 77,878.65 and 30,942.12 is: 42,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,434.17 : 77,878.65 = 30,942.12 : x
  2. Step 2: Convert to fraction form
    56,434.17/77,878.65 = 30,942.12/x
  3. Step 3: Cross multiply
    56,434.17x = 77,878.65 × 30,942.12
  4. Step 4: Simplify right side
    56,434.17x = 2,409,730,533.74
  5. Step 5: Solve for x
    x = 2,409,730,533.74/56,434.17
  6. Step 6: Final answer
    x = 42,699.85

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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.