Home / 39,868,387.37-55,018,411.65-21,533,672.87

Finding the Fourth Proportional to 39,868,387.37, 55,018,411.65 and 21,533,672.87

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Solution

The fourth proportional to 39,868,387.37, 55,018,411.65 and 21,533,672.87 is: 29,716,488.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868,387.37 : 55,018,411.65 = 21,533,672.87 : x
  2. Step 2: Convert to fraction form
    39,868,387.37/55,018,411.65 = 21,533,672.87/x
  3. Step 3: Cross multiply
    39,868,387.37x = 55,018,411.65 × 21,533,672.87
  4. Step 4: Simplify right side
    39,868,387.37x = 1,184,748,478,547,867.50
  5. Step 5: Solve for x
    x = 1,184,748,478,547,867.50/39,868,387.37
  6. Step 6: Final answer
    x = 29,716,488.59

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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.