Home / 72,346,078.60-108,519,117.90-66,803,345.80

Finding the Fourth Proportional to 72,346,078.60, 108,519,117.90 and 66,803,345.80

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Solution

The fourth proportional to 72,346,078.60, 108,519,117.90 and 66,803,345.80 is: 100,205,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,346,078.60 : 108,519,117.90 = 66,803,345.80 : x
  2. Step 2: Convert to fraction form
    72,346,078.60/108,519,117.90 = 66,803,345.80/x
  3. Step 3: Cross multiply
    72,346,078.60x = 108,519,117.90 × 66,803,345.80
  4. Step 4: Simplify right side
    72,346,078.60x = 7,249,440,158,984,670
  5. Step 5: Solve for x
    x = 7,249,440,158,984,670/72,346,078.60
  6. Step 6: Final answer
    x = 100,205,018.70

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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.