Home / 66,631.79-91,943.01-42,790.77

Finding the Fourth Proportional to 66,631.79, 91,943.01 and 42,790.77

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Solution

The fourth proportional to 66,631.79, 91,943.01 and 42,790.77 is: 59,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,631.79 : 91,943.01 = 42,790.77 : x
  2. Step 2: Convert to fraction form
    66,631.79/91,943.01 = 42,790.77/x
  3. Step 3: Cross multiply
    66,631.79x = 91,943.01 × 42,790.77
  4. Step 4: Simplify right side
    66,631.79x = 3,934,312,194.02
  5. Step 5: Solve for x
    x = 3,934,312,194.02/66,631.79
  6. Step 6: Final answer
    x = 59,045.57

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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.