Home / 39,905,419.92-55,069,495.80-21,570,705.36

Finding the Fourth Proportional to 39,905,419.92, 55,069,495.80 and 21,570,705.36

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Solution

The fourth proportional to 39,905,419.92, 55,069,495.80 and 21,570,705.36 is: 29,767,582.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,905,419.92 : 55,069,495.80 = 21,570,705.36 : x
  2. Step 2: Convert to fraction form
    39,905,419.92/55,069,495.80 = 21,570,705.36/x
  3. Step 3: Cross multiply
    39,905,419.92x = 55,069,495.80 × 21,570,705.36
  4. Step 4: Simplify right side
    39,905,419.92x = 1,187,887,868,225,557.50
  5. Step 5: Solve for x
    x = 1,187,887,868,225,557.50/39,905,419.92
  6. Step 6: Final answer
    x = 29,767,582.21

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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.