Home / 51,117.20-70,543.80-28,457.12

Finding the Fourth Proportional to 51,117.20, 70,543.80 and 28,457.12

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Solution

The fourth proportional to 51,117.20, 70,543.80 and 28,457.12 is: 39,271.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,117.20 : 70,543.80 = 28,457.12 : x
  2. Step 2: Convert to fraction form
    51,117.20/70,543.80 = 28,457.12/x
  3. Step 3: Cross multiply
    51,117.20x = 70,543.80 × 28,457.12
  4. Step 4: Simplify right side
    51,117.20x = 2,007,473,381.86
  5. Step 5: Solve for x
    x = 2,007,473,381.86/51,117.20
  6. Step 6: Final answer
    x = 39,271.97

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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.