Home / 56,079.05-77,386.93-30,928.55

Finding the Fourth Proportional to 56,079.05, 77,386.93 and 30,928.55

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Solution

The fourth proportional to 56,079.05, 77,386.93 and 30,928.55 is: 42,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,079.05 : 77,386.93 = 30,928.55 : x
  2. Step 2: Convert to fraction form
    56,079.05/77,386.93 = 30,928.55/x
  3. Step 3: Cross multiply
    56,079.05x = 77,386.93 × 30,928.55
  4. Step 4: Simplify right side
    56,079.05x = 2,393,465,069.60
  5. Step 5: Solve for x
    x = 2,393,465,069.60/56,079.05
  6. Step 6: Final answer
    x = 42,680.20

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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.