Home / 77,200.08-115,782.63-39,210.84

Finding the Fourth Proportional to 77,200.08, 115,782.63 and 39,210.84

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Solution

The fourth proportional to 77,200.08, 115,782.63 and 39,210.84 is: 58,807.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,200.08 : 115,782.63 = 39,210.84 : x
  2. Step 2: Convert to fraction form
    77,200.08/115,782.63 = 39,210.84/x
  3. Step 3: Cross multiply
    77,200.08x = 115,782.63 × 39,210.84
  4. Step 4: Simplify right side
    77,200.08x = 4,539,934,179.71
  5. Step 5: Solve for x
    x = 4,539,934,179.71/77,200.08
  6. Step 6: Final answer
    x = 58,807.38

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1.5x scale

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.