Home / 78,187,969.32-107,901,045.68-42,905,465.82

Finding the Fourth Proportional to 78,187,969.32, 107,901,045.68 and 42,905,465.82

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Solution

The fourth proportional to 78,187,969.32, 107,901,045.68 and 42,905,465.82 is: 59,210,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,187,969.32 : 107,901,045.68 = 42,905,465.82 : x
  2. Step 2: Convert to fraction form
    78,187,969.32/107,901,045.68 = 42,905,465.82/x
  3. Step 3: Cross multiply
    78,187,969.32x = 107,901,045.68 × 42,905,465.82
  4. Step 4: Simplify right side
    78,187,969.32x = 4,629,544,627,203,010
  5. Step 5: Solve for x
    x = 4,629,544,627,203,010/78,187,969.32
  6. Step 6: Final answer
    x = 59,210,447.18

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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.