Home / 66,452,573.40-99,678,860.10-47,178,979.80

Finding the Fourth Proportional to 66,452,573.40, 99,678,860.10 and 47,178,979.80

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Solution

The fourth proportional to 66,452,573.40, 99,678,860.10 and 47,178,979.80 is: 70,768,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,452,573.40 : 99,678,860.10 = 47,178,979.80 : x
  2. Step 2: Convert to fraction form
    66,452,573.40/99,678,860.10 = 47,178,979.80/x
  3. Step 3: Cross multiply
    66,452,573.40x = 99,678,860.10 × 47,178,979.80
  4. Step 4: Simplify right side
    66,452,573.40x = 4,702,746,927,144,925
  5. Step 5: Solve for x
    x = 4,702,746,927,144,925/66,452,573.40
  6. Step 6: Final answer
    x = 70,768,469.70

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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.