Home / 78,075,689.36-117,138,009.36-46,985,270.36

Finding the Fourth Proportional to 78,075,689.36, 117,138,009.36 and 46,985,270.36

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Solution

The fourth proportional to 78,075,689.36, 117,138,009.36 and 46,985,270.36 is: 70,492,634.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,075,689.36 : 117,138,009.36 = 46,985,270.36 : x
  2. Step 2: Convert to fraction form
    78,075,689.36/117,138,009.36 = 46,985,270.36/x
  3. Step 3: Cross multiply
    78,075,689.36x = 117,138,009.36 × 46,985,270.36
  4. Step 4: Simplify right side
    78,075,689.36x = 5,503,761,039,211,810
  5. Step 5: Solve for x
    x = 5,503,761,039,211,810/78,075,689.36
  6. Step 6: Final answer
    x = 70,492,634.57

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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.