Home / 42,743,649.60-64,157,464.80-21,202,574.40

Finding the Fourth Proportional to 42,743,649.60, 64,157,464.80 and 21,202,574.40

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Solution

The fourth proportional to 42,743,649.60, 64,157,464.80 and 21,202,574.40 is: 31,824,690.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,743,649.60 : 64,157,464.80 = 21,202,574.40 : x
  2. Step 2: Convert to fraction form
    42,743,649.60/64,157,464.80 = 21,202,574.40/x
  3. Step 3: Cross multiply
    42,743,649.60x = 64,157,464.80 × 21,202,574.40
  4. Step 4: Simplify right side
    42,743,649.60x = 1,360,303,420,737,381
  5. Step 5: Solve for x
    x = 1,360,303,420,737,381/42,743,649.60
  6. Step 6: Final answer
    x = 31,824,690.53

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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.