Home / 66,518.76-91,586.34-56,426.28

Finding the Fourth Proportional to 66,518.76, 91,586.34 and 56,426.28

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Solution

The fourth proportional to 66,518.76, 91,586.34 and 56,426.28 is: 77,690.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,518.76 : 91,586.34 = 56,426.28 : x
  2. Step 2: Convert to fraction form
    66,518.76/91,586.34 = 56,426.28/x
  3. Step 3: Cross multiply
    66,518.76x = 91,586.34 × 56,426.28
  4. Step 4: Simplify right side
    66,518.76x = 5,167,876,465.02
  5. Step 5: Solve for x
    x = 5,167,876,465.02/66,518.76
  6. Step 6: Final answer
    x = 77,690.51

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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.