Home / 78,709.08-108,557.10-50,417.40

Finding the Fourth Proportional to 78,709.08, 108,557.10 and 50,417.40

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Solution

The fourth proportional to 78,709.08, 108,557.10 and 50,417.40 is: 69,536.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,709.08 : 108,557.10 = 50,417.40 : x
  2. Step 2: Convert to fraction form
    78,709.08/108,557.10 = 50,417.40/x
  3. Step 3: Cross multiply
    78,709.08x = 108,557.10 × 50,417.40
  4. Step 4: Simplify right side
    78,709.08x = 5,473,166,733.54
  5. Step 5: Solve for x
    x = 5,473,166,733.54/78,709.08
  6. Step 6: Final answer
    x = 69,536.66

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1.5x scale

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.