Home / 72,650,681.88-100,258,725.02-39,610,662.90

Finding the Fourth Proportional to 72,650,681.88, 100,258,725.02 and 39,610,662.90

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Solution

The fourth proportional to 72,650,681.88, 100,258,725.02 and 39,610,662.90 is: 54,663,142.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,650,681.88 : 100,258,725.02 = 39,610,662.90 : x
  2. Step 2: Convert to fraction form
    72,650,681.88/100,258,725.02 = 39,610,662.90/x
  3. Step 3: Cross multiply
    72,650,681.88x = 100,258,725.02 × 39,610,662.90
  4. Step 4: Simplify right side
    72,650,681.88x = 3,971,314,559,551,015.50
  5. Step 5: Solve for x
    x = 3,971,314,559,551,015.50/72,650,681.88
  6. Step 6: Final answer
    x = 54,663,142.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.