Home / 71,189,430.40-106,784,145.60-38,828,828.80

Finding the Fourth Proportional to 71,189,430.40, 106,784,145.60 and 38,828,828.80

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Solution

The fourth proportional to 71,189,430.40, 106,784,145.60 and 38,828,828.80 is: 58,243,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,189,430.40 : 106,784,145.60 = 38,828,828.80 : x
  2. Step 2: Convert to fraction form
    71,189,430.40/106,784,145.60 = 38,828,828.80/x
  3. Step 3: Cross multiply
    71,189,430.40x = 106,784,145.60 × 38,828,828.80
  4. Step 4: Simplify right side
    71,189,430.40x = 4,146,303,308,056,672.50
  5. Step 5: Solve for x
    x = 4,146,303,308,056,672.50/71,189,430.40
  6. Step 6: Final answer
    x = 58,243,243.20

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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.