Home / 78,526.35-108,368.19-42,718.32

Finding the Fourth Proportional to 78,526.35, 108,368.19 and 42,718.32

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Solution

The fourth proportional to 78,526.35, 108,368.19 and 42,718.32 is: 58,952.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,526.35 : 108,368.19 = 42,718.32 : x
  2. Step 2: Convert to fraction form
    78,526.35/108,368.19 = 42,718.32/x
  3. Step 3: Cross multiply
    78,526.35x = 108,368.19 × 42,718.32
  4. Step 4: Simplify right side
    78,526.35x = 4,629,307,018.24
  5. Step 5: Solve for x
    x = 4,629,307,018.24/78,526.35
  6. Step 6: Final answer
    x = 58,952.28

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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.