Home / 72,909,638.60-109,364,457.90-71,775,897.80

Finding the Fourth Proportional to 72,909,638.60, 109,364,457.90 and 71,775,897.80

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Solution

The fourth proportional to 72,909,638.60, 109,364,457.90 and 71,775,897.80 is: 107,663,846.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,909,638.60 : 109,364,457.90 = 71,775,897.80 : x
  2. Step 2: Convert to fraction form
    72,909,638.60/109,364,457.90 = 71,775,897.80/x
  3. Step 3: Cross multiply
    72,909,638.60x = 109,364,457.90 × 71,775,897.80
  4. Step 4: Simplify right side
    72,909,638.60x = 7,849,732,153,182,803
  5. Step 5: Solve for x
    x = 7,849,732,153,182,803/72,909,638.60
  6. Step 6: Final answer
    x = 107,663,846.70

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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.