Home / 66,490,931.80-99,736,397.70-40,981,763.80

Finding the Fourth Proportional to 66,490,931.80, 99,736,397.70 and 40,981,763.80

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Solution

The fourth proportional to 66,490,931.80, 99,736,397.70 and 40,981,763.80 is: 61,472,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,490,931.80 : 99,736,397.70 = 40,981,763.80 : x
  2. Step 2: Convert to fraction form
    66,490,931.80/99,736,397.70 = 40,981,763.80/x
  3. Step 3: Cross multiply
    66,490,931.80x = 99,736,397.70 × 40,981,763.80
  4. Step 4: Simplify right side
    66,490,931.80x = 4,087,373,492,804,263
  5. Step 5: Solve for x
    x = 4,087,373,492,804,263/66,490,931.80
  6. Step 6: Final answer
    x = 61,472,645.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.