Home / 28,431,085.80-42,646,628.70-28,218,509.40

Finding the Fourth Proportional to 28,431,085.80, 42,646,628.70 and 28,218,509.40

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Solution

The fourth proportional to 28,431,085.80, 42,646,628.70 and 28,218,509.40 is: 42,327,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431,085.80 : 42,646,628.70 = 28,218,509.40 : x
  2. Step 2: Convert to fraction form
    28,431,085.80/42,646,628.70 = 28,218,509.40/x
  3. Step 3: Cross multiply
    28,431,085.80x = 42,646,628.70 × 28,218,509.40
  4. Step 4: Simplify right side
    28,431,085.80x = 1,203,424,292,849,259.75
  5. Step 5: Solve for x
    x = 1,203,424,292,849,259.75/28,431,085.80
  6. Step 6: Final answer
    x = 42,327,764.10

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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.