Home / 72,909,969.60-109,364,954.40-71,776,228.80

Finding the Fourth Proportional to 72,909,969.60, 109,364,954.40 and 71,776,228.80

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Solution

The fourth proportional to 72,909,969.60, 109,364,954.40 and 71,776,228.80 is: 107,664,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,909,969.60 : 109,364,954.40 = 71,776,228.80 : x
  2. Step 2: Convert to fraction form
    72,909,969.60/109,364,954.40 = 71,776,228.80/x
  3. Step 3: Cross multiply
    72,909,969.60x = 109,364,954.40 × 71,776,228.80
  4. Step 4: Simplify right side
    72,909,969.60x = 7,849,803,989,715,967
  5. Step 5: Solve for x
    x = 7,849,803,989,715,967/72,909,969.60
  6. Step 6: Final answer
    x = 107,664,343.20

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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.