Home / 77,720,989-107,255,483.35-42,439,039.10

Finding the Fourth Proportional to 77,720,989, 107,255,483.35 and 42,439,039.10

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Solution

The fourth proportional to 77,720,989, 107,255,483.35 and 42,439,039.10 is: 58,566,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,720,989 : 107,255,483.35 = 42,439,039.10 : x
  2. Step 2: Convert to fraction form
    77,720,989/107,255,483.35 = 42,439,039.10/x
  3. Step 3: Cross multiply
    77,720,989x = 107,255,483.35 × 42,439,039.10
  4. Step 4: Simplify right side
    77,720,989x = 4,551,819,651,580,049
  5. Step 5: Solve for x
    x = 4,551,819,651,580,049/77,720,989
  6. Step 6: Final answer
    x = 58,566,157.10

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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.