Home / 81,478,916.12-112,442,266.86-46,674,641.72

Finding the Fourth Proportional to 81,478,916.12, 112,442,266.86 and 46,674,641.72

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Solution

The fourth proportional to 81,478,916.12, 112,442,266.86 and 46,674,641.72 is: 64,411,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,478,916.12 : 112,442,266.86 = 46,674,641.72 : x
  2. Step 2: Convert to fraction form
    81,478,916.12/112,442,266.86 = 46,674,641.72/x
  3. Step 3: Cross multiply
    81,478,916.12x = 112,442,266.86 × 46,674,641.72
  4. Step 4: Simplify right side
    81,478,916.12x = 5,248,202,519,875,129
  5. Step 5: Solve for x
    x = 5,248,202,519,875,129/81,478,916.12
  6. Step 6: Final answer
    x = 64,411,786.14

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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.