Home / 42,840.15-64,278-26,200.77

Finding the Fourth Proportional to 42,840.15, 64,278 and 26,200.77

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Solution

The fourth proportional to 42,840.15, 64,278 and 26,200.77 is: 39,312.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,840.15 : 64,278 = 26,200.77 : x
  2. Step 2: Convert to fraction form
    42,840.15/64,278 = 26,200.77/x
  3. Step 3: Cross multiply
    42,840.15x = 64,278 × 26,200.77
  4. Step 4: Simplify right side
    42,840.15x = 1,684,133,094.06
  5. Step 5: Solve for x
    x = 1,684,133,094.06/42,840.15
  6. Step 6: Final answer
    x = 39,312.03

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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.