Home / 77,838.07-107,424.63-47,643.52

Finding the Fourth Proportional to 77,838.07, 107,424.63 and 47,643.52

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Solution

The fourth proportional to 77,838.07, 107,424.63 and 47,643.52 is: 65,753.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,838.07 : 107,424.63 = 47,643.52 : x
  2. Step 2: Convert to fraction form
    77,838.07/107,424.63 = 47,643.52/x
  3. Step 3: Cross multiply
    77,838.07x = 107,424.63 × 47,643.52
  4. Step 4: Simplify right side
    77,838.07x = 5,118,087,507.90
  5. Step 5: Solve for x
    x = 5,118,087,507.90/77,838.07
  6. Step 6: Final answer
    x = 65,753.01

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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.